Folding pipe flexible connection simulation device

Abstract

The invention provides a folding pipe flexible connection simulation device, and relates to the technical field of pipeline connection. The folding pipe flexible connection simulation device comprises a circumferential simulation assembly and an axial simulation assembly, the circumferential simulation assembly comprises a connecting piece and two positioning plates, the middles of the two positioning plates are rotationally connected through the connecting piece, each positioning plate is provided with two adjusting parts, and the adjusting parts are arranged close to the ends of the corresponding positioning plates; the axial simulation assembly comprises four positioning shafts, and the positioning shafts can penetrate through the four adjusting parts in a one-to-one correspondence manner; after the first ends of the positioning shafts penetrate through the corresponding adjusting parts and are fixedly inserted into the multiple first positioning holes in a one-to-one correspondence mode, the positions of the pipe flanges are adjusted so that the second ends of the positioning shafts can be inserted into the multiple second positioning holes in a one-to-one correspondence mode. The folding pipe flexible connection simulation device can simulate flexible connection to complete centering adjustment, manpower and material resources are saved, and cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, and in particular to a closed pipe soft connection simulation device. Background Art

[0002] During the construction of large cruise ships and ships, when installing fans, there are cases where the fan soft connection cannot meet the centering requirements due to reasons such as inaccurate equipment positioning due to thin plate deformation, mismatch between incoming goods and design modeling, and unreasonable closing pipe form. If the fan soft connection is not centered, it will cause the fan's air volume loss, reduce the fan efficiency, and produce deviation and eddy current phenomena, resulting in high fan noise. In the prior art, the soft connection centering adjustment is mainly carried out by modifying the air duct connected to the soft connection. Although it can improve the above problems, it consumes manpower and material resources and leads to high costs. Summary of the invention

[0003] The object of the present invention is to provide a closed pipe flexible connection simulation device, which can simulate the flexible connection to complete the centering adjustment, save manpower and material resources, and thus save costs.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The closed pipe soft connection simulation device is used to simulate the soft connection between the fan flange and the pipe flange, the fan flange is provided with a plurality of first positioning holes, and the pipe flange is provided with a plurality of second positioning holes corresponding to the plurality of the first positioning holes. The closed pipe soft connection simulation device comprises:

[0006] A circumferential simulation component includes a connecting member and two positioning plates, wherein the middle parts of the two positioning plates are rotatably connected through the connecting member, and each of the positioning plates is provided with two adjustment parts, and the adjustment parts are arranged close to the ends of the corresponding positioning plates;

[0007] The axial simulation component includes four positioning shafts, each of which can be correspondingly arranged in the four adjusting parts;

[0008] After the first end of each positioning shaft passes through the corresponding adjustment portion and is fixedly inserted in the first positioning holes one by one, the position of the pipe flange is adjusted so that the second end of each positioning shaft is inserted in the second positioning holes one by one.

[0009] As a further technical solution, the adjustment portion is configured as a long hole extending along the length direction of the corresponding positioning plate;

[0010] Alternatively, the adjustment portion includes a plurality of positioning holes, and the plurality of positioning holes are arranged at intervals along a length direction of the corresponding positioning plate.

[0011] As a further technical solution, along the length direction of the positioning plate, a distance reference ruler is provided on the positioning plate corresponding to each of the adjustment parts.

[0012] As a further technical solution, the circumferential simulation component also includes an angle reference scale, and the angle reference scale is fixedly arranged on the connecting member.

[0013] As a further technical solution, the circumferential simulation component also includes a positioning auxiliary rod. When the first end of each positioning shaft passes through the corresponding adjustment part and is fixedly inserted into the plurality of first positioning holes one by one, the two ends of the positioning auxiliary rod are respectively connected to the two positioning plates in a limiting manner.

[0014] As a further technical solution, a connecting hole is provided in the middle of the two positioning plates, and the connecting member includes a connecting bolt and a connecting nut. The connecting bolt passes through the two connecting holes in sequence, and the connecting nut is threadedly connected to the connecting bolt.

[0015] As a further technical solution, each of the positioning shafts is configured as a positioning screw, and the axial simulation assembly further includes four positioning groups, and each of the positioning groups includes two positioning nuts;

[0016] Both of the two positioning nuts can be threadedly connected to the corresponding positioning screws, and when the first end of the positioning screw is inserted into the corresponding first positioning hole, the two positioning nuts are respectively located on both sides of the fan flange to fix the corresponding positioning screws on the fan flange.

[0017] As a further technical solution, the axial simulation assembly further comprises four auxiliary groups, each of which comprises two auxiliary nuts;

[0018] Both of the auxiliary nuts can be threadedly connected to the corresponding positioning screws, and when the first end of the positioning screw is inserted into the corresponding first positioning hole, the two auxiliary nuts and the adjustment part are correspondingly arranged on both sides of the corresponding positioning plate to limit the relative position of the positioning screw and the corresponding positioning plate.

[0019] As a further technical solution, each of the positioning axes is configured as a telescopic axis.

[0020] As a further technical solution, the circumferential simulation component and the axial simulation component are both configured as rigid components.

[0021] Compared with the prior art, the closed pipe flexible connection simulation device provided by the present invention has the following technical advantages:

[0022] Since the middle parts of the two positioning plates are rotatably connected by a connecting piece, the two positioning plates can rotate relative to each other, and each positioning plate is provided with an adjustment portion near its end to allow the corresponding positioning shaft to pass through. Therefore, when it is necessary to simulate the soft connection between the fan flange and the pipe flange to achieve the centering adjustment of the fan flange and the pipe flange, the first ends of the four positioning shafts are first passed through the corresponding adjustment portions and fixedly connected to the multiple first positioning holes one by one, and then the position and angle of the pipe flange are adjusted according to the relative positions of the four positioning shafts so that the second ends of the four positioning shafts are inserted into the multiple second positioning holes one by one. In this way, since the four positioning shafts are all fixed to the fan flange, the relative positions between the four positioning shafts and the fan flange are limited, and since the four positioning shafts are all inserted into the corresponding adjustment parts to limit the extension direction of the four positioning shafts and avoid the four positioning shafts from tilting in the length direction, when the second ends of the four positioning shafts are inserted in the corresponding second positioning holes, the deflection angle between the fan flange and the pipe flange can be avoided, thereby realizing the deflection angle simulation at both ends of the soft connection; the four positioning shafts are simultaneously limited by the two positioning plates to ensure the coaxiality between the fan flange and the pipe flange, that is, to achieve the coaxiality simulation at both ends of the soft connection; when the second ends of the four positioning shafts are inserted in the corresponding second positioning holes with the same length, the distance between the fan flange and the pipe flange can be guaranteed, that is, to achieve the axial compression simulation of the soft connection. With the help of the closed pipe soft connection simulation device, when the deflection angle, coaxial rate, and axial compression between the fan flange and the pipe flange meet the set values, it means that the fan flange and the pipe flange meet the centering requirements. In this state, the fan flange and the pipe flange are fixed, and then the two are softly connected to ensure that the deflection angle, coaxial rate, and axial compression of the soft connection meet the set values. During the whole process, with the help of two positioning plates and four positioning axes, the simulation of the soft connection between the fan flange and the pipe flange can be realized, thereby meeting the centering requirements when the fan flange and the pipe flange are softly connected. The closed pipe soft connection simulation device has a simple structure and is easy to operate, which can save manpower and material resources to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the closed pipe flexible connection simulation device in use state provided by an embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a circumferential simulation component in a closed pipe flexible connection simulation device provided by an embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of external components of the closed pipe flexible connection simulation device provided by an embodiment of the present invention after the centering simulation is completed.

[0027] In the figure:

[0028] 10. Fan flange; 20. Pipe flange;

[0029] 100, circumferential simulation component; 110, connecting piece; 120, positioning plate; 121, long hole; 122, distance reference ruler; 130, angle reference ruler; 140, positioning auxiliary rod;

[0030] 200, axial simulation component; 210, positioning shaft; 220, positioning nut; 230, auxiliary nut. DETAILED DESCRIPTION

[0031] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0032] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0033] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0034] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0035] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, etc. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0036] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0038] Combination Figures 1 to 3As shown, the closed pipe flexible connection simulation device provided in this embodiment is used to simulate the flexible connection between the fan flange 10 and the pipe flange 20 to complete the centering adjustment, save manpower and material resources, and save costs. The fan flange 10 is provided with a plurality of first positioning holes, and the pipe flange 20 is provided with a plurality of second positioning holes corresponding to the plurality of first positioning holes. Specifically, the closed pipe flexible connection simulation device includes a circumferential simulation component 100 and an axial simulation component 200: the circumferential simulation component 100 includes a connecting piece 110 and two positioning plates 120, the middle parts of the two positioning plates 120 are rotatably connected through the connecting piece 110, and each positioning plate 120 is provided with two adjustment parts, and the two adjustment parts are arranged near the two ends of the corresponding positioning plate 120; the axial simulation component 200 includes four positioning shafts 210, and each positioning shaft 210 can be passed through the four adjustment parts in a one-to-one correspondence; after the first end of each positioning shaft 210 passes through the corresponding adjustment part and is fixedly inserted in the multiple first positioning holes in a one-to-one correspondence, the position of the pipe flange 20 is adjusted so that the second end of each positioning shaft 210 is inserted in the multiple second positioning holes in a one-to-one correspondence.

[0039] In this embodiment, the flange for setting the fan outlet is defined as the fan flange 10 , and the flange for closing the pipe inlet is defined as the pipe flange 20 .

[0040] Since the middle parts of the two positioning plates 120 are rotatably connected by the connecting piece 110, the two positioning plates 120 can rotate relative to each other, and each positioning plate 120 is provided with an adjustment portion near its end to allow the corresponding positioning shaft 210 to pass through. Therefore, when it is necessary to simulate the soft connection between the fan flange 10 and the pipe flange 20 to achieve the centering adjustment of the fan flange 10 and the pipe flange 20, the first ends of the four positioning shafts 210 are first passed through the corresponding adjustment portions and fixedly connected to the multiple first positioning holes one by one, and then the position and angle of the pipe flange 20 are adjusted according to the relative positions of the four positioning shafts 210 so that the second ends of the four positioning shafts 210 are inserted into the multiple second positioning holes one by one. In this way, since the four positioning shafts 210 are all fixed to the fan flange 10, the relative positions between the four positioning shafts 210 and the fan flange 10 are limited, and since the four positioning shafts 210 are all inserted into the corresponding adjustment parts to limit the extension direction of the four positioning shafts 210 and avoid the four positioning shafts 210 from tilting in the length direction, when the second ends of the four positioning shafts 210 are inserted into the corresponding second positioning holes, the deflection angle between the fan flange 10 and the pipe flange 20 can be avoided, thereby realizing the deflection angle simulation at both ends of the soft connection; the four positioning shafts 210 are simultaneously limited by the two positioning plates 120 to ensure the coaxial rate between the fan flange 10 and the pipe flange 20, that is, to realize the coaxial rate simulation at both ends of the soft connection; when the second ends of the four positioning shafts 210 are inserted into the corresponding second positioning holes with the same length, the distance between the fan flange 10 and the pipe flange 20 can be guaranteed, that is, to realize the axial compression simulation of the soft connection. With the help of the closed pipe soft connection simulation device, when the deflection angle, coaxial rate, and axial compression between the fan flange 10 and the pipe flange 20 meet the set values, it means that the fan flange 10 and the pipe flange 20 meet the centering requirements. In this state, the fan flange 10 and the pipe flange 20 are fixed, and then the two are softly connected to ensure that the deflection angle, coaxial rate, and axial compression of the soft connection meet the set values. In the whole process, with the help of two positioning plates 120 and four positioning shafts 210, the simulation of the soft connection between the fan flange 10 and the pipe flange 20 can be realized, thereby meeting the centering requirements when the fan flange 10 and the pipe flange 20 are softly connected, and the closed pipe soft connection simulation device has a simple structure and is easy to operate, thereby saving manpower and material resources to reduce costs.

[0041] Preferably, the adjustment part is set as an elongated hole 121 extending along the length direction of the corresponding positioning plate 120. By positioning the relative position of the shaft 210 in the elongated hole 121, the simulation of the soft connection between the fan flange 10 and the pipe flange 20 of different specifications can be realized, and the simulation accuracy can be ensured while improving the applicable scope of the closed pipe soft connection simulation device to further reduce the use cost. At the same time, the adjustment part is set as an elongated hole 121 extending along the length direction of the corresponding positioning plate 120, and the position of the positioning shaft 210 in the corresponding elongated hole 121 is adjusted according to the actual shape of the fan flange 10. The same circumferential simulation component 100 can realize the simulation of the soft connection between the square or circular fan flange 10 and the pipe flange 20, so as to further improve its applicability. In some other embodiments, the adjustment part includes a plurality of positioning holes, and the plurality of positioning holes are arranged at intervals along the length direction of the corresponding positioning plate 120. By passing the positioning shaft 210 through the positioning holes at different positions in the corresponding adjustment part, the simulation of the soft connection between the fan flange 10 and the pipe flange 20 of different specifications or shapes can be realized.

[0042] Alternatively, the number of positioning plates 120 may be appropriately increased according to actual conditions to meet the simulation requirements for soft connection between fan flanges 10 and pipe flanges 20 of other shapes. For example, three or four positioning plates 120 may be set to simulate the soft connection between regular hexagonal or regular octagonal fan flanges 10 and pipe flanges 20.

[0043] In order to further improve the simulation accuracy, in the present embodiment, a distance reference scale 122 is provided on the positioning plate 120 corresponding to each adjustment part along the length direction of the corresponding positioning plate 120. By referring to the corresponding distance reference scale 122, the relative position of each positioning axis 210 and the corresponding adjustment part can be grasped, thereby further improving the positioning accuracy and improving the simulation accuracy.

[0044] In order to facilitate the grasping of the relative position between the two positioning plates 120, in this embodiment, the circumferential simulation component 100 also includes an angle reference scale 130, and the angle reference scale 130 is fixedly arranged on the connecting member 110. By referring to the angle reference scale 130, the angle between the two positioning plates 120 can be accurately grasped.

[0045] Preferably, the circumferential simulation component 100 also includes a positioning auxiliary rod 140. When the first end of each positioning shaft 210 passes through the corresponding adjustment portion and is fixedly inserted in the plurality of first positioning holes one by one, the two ends of the positioning auxiliary rod 140 are respectively connected to the two positioning plates 120 in a limited manner. In this way, when the first end of each positioning shaft 210 passes through the corresponding adjustment portion and is fixedly inserted in the plurality of first positioning holes one by one, the relative position between the two positioning plates 120 is limited by the positioning auxiliary rod 140 to avoid the relative rotation of the two positioning plates 120 under the action of external force, thereby affecting the relative position of each positioning shaft 210, so as to affect the accuracy of the deflection angle, coaxial rate, and axial compression between the pipe flange 20 and the fan flange 10. The two ends of the positioning auxiliary rod 140 can be connected to the corresponding positioning plates 120 in a limited manner by means of snap-on, plug-in, etc. according to actual needs, which will not be repeated here.

[0046] Preferably, a connecting hole is provided in the middle of the two positioning plates 120, and the connecting member 110 includes a connecting bolt and a connecting nut. The connecting bolt passes through the two connecting holes in sequence, and the connecting nut is threadedly connected to the connecting bolt.

[0047] With such arrangement, the relative positions of the two positioning plates 120 can be adjusted after loosening the connecting nut, and the structure is simple and easy to operate; after the relative positions of the two positioning plates 120 are adjusted, the connecting nut is tightened to limit the two positioning plates 120 to prevent the two positioning plates 120 from rotating relative to each other and affecting the relative positions of the positioning shafts 210.

[0048] Preferably, each positioning shaft 210 is configured as a positioning screw, and the axial simulation component 200 further includes four positioning groups, each positioning group includes two positioning nuts 220; the two positioning nuts 220 can be threadedly connected to the corresponding positioning screw, and when the first end of the positioning screw is inserted into the corresponding first positioning hole, the two positioning nuts 220 are respectively located on both sides of the fan flange 10, so that the corresponding positioning screw is fixedly set on the fan flange 10. In this way, the positioning screw can be fixedly connected to the corresponding first positioning hole through the cooperation of the two positioning nuts 220, and after tightening the two positioning nuts 220, the relative position of the positioning screw and the fan flange 10 can also be limited, which has a simple structure and convenient operation. In some other embodiments, the positioning nut 220 is not provided, and the multiple first positioning holes are directly set as threaded holes, and the positioning screw is directly threadedly connected to the corresponding threaded holes; or, the positioning nut 220 is not provided, and the positioning shaft 210 is inserted into the corresponding first positioning hole by interference.

[0049] Preferably, the axial simulation component 200 also includes four auxiliary groups, each of which includes two auxiliary nuts 230; the two auxiliary nuts 230 can be threadedly connected to the corresponding positioning screws, and when the first end of the positioning screw is inserted into the corresponding first positioning hole, the two auxiliary nuts 230 and the adjustment part are arranged on both sides of the corresponding positioning plate 120 corresponding to each other to limit the relative position of the positioning screw and the corresponding positioning plate 120.

[0050] In order to ensure that the positioning screw can smoothly pass through the corresponding adjustment part, the width of the adjustment part is greater than the diameter of the positioning screw. After the first end of the positioning screw passes through the corresponding adjustment part and is inserted into the corresponding first positioning hole, the two auxiliary nuts 230 are both threadedly connected to the corresponding positioning screw and are respectively located on both sides of the corresponding positioning plate 120; tighten one of the auxiliary nuts 230 so that the two auxiliary nuts 230 clamp the corresponding positioning plate 120, thereby eliminating the influence of the gap between the positioning screw and the corresponding adjustment part on the simulation accuracy.

[0051] In order to simulate the soft connection between the fan flange 10 and the pipe flange 20 at different distances, in this embodiment, each positioning axis 210 is configured as a telescopic axis, which can be adaptively telescoped according to the different distances between the fan flange 10 and the pipe flange 20, so as to further improve the applicability of the axial simulation component 200 and the closed pipe soft connection simulation device.

[0052] In order to enhance the structural strength of the circumferential simulation component 100 and the axial simulation component 200 and avoid the simulation of the soft connection between the fan flange 10 and the pipe flange 20 being affected by the deformation of the circumferential simulation component 100 or the axial simulation component 200 due to its own structure, in this embodiment, the circumferential simulation component 100 and the axial simulation component 200 are both configured as rigid components to further improve the simulation accuracy.

[0053] The closed pipe flexible connection simulation device provided in this embodiment is not limited to the flexible connection simulation between the fan flange 10 and the pipe flange 20, but can also be used for the simulation of other flexible connections to assist in completing the centering adjustment, which will not be elaborated here.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For a person skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A closed pipe soft connection simulation device, used for simulating the soft connection between a fan flange (10) and a pipe flange (20), wherein the fan flange (10) is provided with a plurality of first positioning holes, and the pipe flange (20) is provided with a plurality of second positioning holes corresponding to the plurality of first positioning holes, characterized in that: The closed pipe flexible connection simulation device comprises: A circumferential simulation component (100) comprises a connecting member (110) and two positioning plates (120), wherein the middle parts of the two positioning plates (120) are rotatably connected via the connecting member (110), and each of the positioning plates (120) is provided with two adjustment parts, wherein the adjustment parts are arranged close to the ends of the corresponding positioning plates (120); An axial simulation component (200) comprises four positioning shafts (210), each of the positioning shafts (210) being capable of being disposed in a one-to-one correspondence through the four adjustment parts; After the first end of each positioning shaft (210) passes through the corresponding adjustment portion and is fixedly inserted into the plurality of first positioning holes one by one, the position of the pipe flange (20) is adjusted so that the second end of each positioning shaft (210) is inserted into the plurality of second positioning holes one by one.

2. The closed pipe soft connection simulation device according to claim 1 is characterized in that: The adjusting portion is configured as a long hole (121) extending along a length direction corresponding to the positioning plate (120); Alternatively, the adjustment portion comprises a plurality of positioning holes, and the plurality of positioning holes are arranged at intervals along the length direction of the corresponding positioning plate (120).

3. The closed pipe soft connection simulation device according to claim 2 is characterized in that: Along the length direction of the corresponding positioning plate (120), a distance reference ruler (122) is provided on the positioning plate (120) corresponding to each of the adjustment parts.

4. The closed pipe flexible connection simulation device according to claim 1, characterized in that: The circumferential simulation component (100) further comprises an angle reference scale (130), wherein the angle reference scale (130) is fixedly arranged on the connecting member (110).

5. The closed pipe flexible connection simulation device according to claim 1, characterized in that: The circumferential simulation component (100) also includes a positioning auxiliary rod (140). When the first end of each positioning shaft (210) passes through the corresponding adjustment part and is fixedly inserted into the plurality of first positioning holes one by one, the two ends of the positioning auxiliary rod (140) are respectively connected to the two positioning plates (120) in a limiting manner.

6. The closed pipe flexible connection simulation device according to claim 1, characterized in that: A connecting hole is provided in the middle of the two positioning plates (120), and the connecting member (110) comprises a connecting bolt and a connecting nut, wherein the connecting bolt passes through the two connecting holes in sequence, and the connecting nut is threadedly connected to the connecting bolt.

7. The closed pipe flexible connection simulation device according to claim 1, characterized in that: Each of the positioning shafts (210) is configured as a positioning screw, and the axial simulation component (200) further comprises four positioning groups, and each of the positioning groups comprises two positioning nuts (220); Both of the two positioning nuts (220) can be threadedly connected to the corresponding positioning screws, and when the first end of the positioning screws is inserted into the corresponding first positioning holes, the two positioning nuts (220) are respectively located on both sides of the fan flange (10) so that the corresponding positioning screws are fixedly arranged on the fan flange (10).

8. The closed pipe flexible connection simulation device according to claim 7, characterized in that: The axial simulation assembly (200) further comprises four auxiliary groups, each of which comprises two auxiliary nuts (230); Both of the two auxiliary nuts (230) can be threadedly connected to the corresponding positioning screw, and when the first end of the positioning screw is inserted into the corresponding first positioning hole, the two auxiliary nuts (230) and the adjustment part are correspondingly arranged on both sides of the corresponding positioning plate (120) to limit the relative position of the positioning screw and the corresponding positioning plate (120).

9. The closed pipe flexible connection simulation device according to claim 1, characterized in that: Each of the positioning shafts (210) is configured as a telescopic shaft.

10. The closed pipe flexible connection simulation device according to any one of claims 1 to 9, characterized in that: The circumferential simulation component (100) and the axial simulation component (200) are both configured as rigid components.

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